BEARING PART AND ROLLING BEARING

摘要

PROBLEM TO BE SOLVED: To provide a bearing part composed of a β sialon sintered body usable even in an environment in which hard foreign matter intrudes inside a bearing, while stably securing sufficient durability, though at low cost, and a rolling bearing having the bearing part.

SOLUTION: At least one of an outer race 11, an inner race 12 and a ball 13 for constituting a deep groove ball bearing 1, is constituted of the sintered body expressed by a composition formula of Si6-ZAlZOZN8-Z, containing β sialon as main component, satisfying 1.0≤z≤2.0, and a residual part of an impurity.

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